/* ══════════════════════════════════════════════
   AULÔMETRO — CSS exclusivo
   ══════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:           #0b0b10;
  --panel:        #13131e;
  --border:       rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.18);
  --text:         #f0f0f8;
  --soft:         #7878a0;
  --green:        #22c55e;
  --green-dim:    #16a34a;
  --green-glow:   rgba(34, 197, 94, 0.2);
  --radius:       18px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ── CHUVA DE EMOJIS ─────────────────────────── */
.rain-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.rain-emoji {
  position: absolute;
  top: -80px;
  user-select: none;
  animation: fall linear forwards;
  will-change: transform;
}

@keyframes fall {
  0%   { transform: translateY(0)     rotate(-10deg); opacity: 0; }
  8%   {                                               opacity: 1; }
  85%  {                                               opacity: 1; }
  100% { transform: translateY(110vh) rotate(25deg);  opacity: 0; }
}

/* ── LAYOUT PRINCIPAL ────────────────────────── */
.app {
  position: relative;
  z-index: 1;
  max-width: 980px;
  margin: 0 auto;
  padding: 52px 32px 64px;
  display: flex;
  flex-direction: column;
  gap: 36px;
  min-height: 100dvh;
}

/* ── CABEÇALHO ───────────────────────────────── */
.app-header {
  text-align: center;
  position: relative;
}

.btn-fullscreen {
  position: absolute;
  top: 0;
  right: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--soft);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.btn-fullscreen:hover {
  background: rgba(255, 255, 255, 0.10);
  color: var(--text);
  border-color: var(--border-hover);
}

.app-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}

.app-sub {
  margin-top: 8px;
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--soft);
}

/* ── PAINEL DE CONFIGURAÇÕES ─────────────────── */
.settings-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.field-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.field {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.field-label {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--soft);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  text-align: center;
  line-height: 1.3;
}

/* ── SPINNER (+/-) ───────────────────────────── */
.spinner {
  display: flex;
  align-items: center;
  gap: 10px;
}

.spin-btn {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s;
  -webkit-user-select: none;
  user-select: none;
}

.spin-btn:hover {
  background: rgba(255, 255, 255, 0.10);
  border-color: var(--border-hover);
}

.spin-btn:active {
  background: rgba(255, 255, 255, 0.18);
  transform: scale(0.94);
}

.spin-val {
  font-size: 0.95rem;
  font-weight: 600;
  min-width: 80px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

/* ── TAXA ────────────────────────────────────── */
.rate-display {
  display: flex;
  align-items: baseline;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px 10px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.rate-label,
.rate-unit {
  font-size: 0.82rem;
  color: var(--soft);
  font-weight: 400;
}

.rate-value {
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--green);
  letter-spacing: -0.03em;
}

/* ── CONTADOR PRINCIPAL ──────────────────────── */
.counter-section {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 36px 20px 28px;
}

.counter-label {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--soft);
  text-transform: uppercase;
  letter-spacing: 0.09em;
}

.counter-value {
  font-size: clamp(4.5rem, 11vw, 7.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--text);
  transition: color 0.5s, text-shadow 0.5s;
  font-variant-numeric: tabular-nums;
}

body.running .counter-value {
  color: var(--green);
  text-shadow:
    0 0 40px var(--green-glow),
    0 0 100px var(--green-glow);
}

.elapsed-time {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--soft);
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  margin-top: 4px;
}

/* ── CONTROLES ───────────────────────────────── */
.controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
}

.btn-start {
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 600;
  padding: 16px 48px;
  border-radius: 980px;
  border: none;
  cursor: pointer;
  background: var(--green);
  color: #fff;
  min-width: 190px;
  transition: transform 0.15s, filter 0.15s;
  letter-spacing: -0.01em;
}

.btn-start:hover  { transform: translateY(-2px); filter: brightness(1.1); }
.btn-start:active { transform: scale(0.97); }

.btn-reset {
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 16px 28px;
  border-radius: 980px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--soft);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.btn-reset:hover {
  background: rgba(255, 255, 255, 0.10);
  color: var(--text);
  border-color: var(--border-hover);
}

/* ── DICA ────────────────────────────────────── */
.hint {
  text-align: center;
  font-size: 0.78rem;
  color: var(--soft);
  font-weight: 300;
}

kbd {
  display: inline-block;
  padding: 2px 7px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 5px;
  font-family: inherit;
  font-size: 0.78rem;
  background: rgba(255, 255, 255, 0.05);
  letter-spacing: 0;
}

/* ── RESPONSIVO ──────────────────────────────── */
@media (max-width: 640px) {
  .app { padding: 36px 20px 48px; gap: 28px; }
  .field-row { grid-template-columns: repeat(2, 1fr); }
  .settings-panel { padding: 22px 20px 20px; }
  .counter-value { font-size: clamp(3.2rem, 18vw, 5rem); }
  .btn-start { min-width: 160px; padding: 14px 32px; }
}